MX-5 boot

[Singlelady]

I have a 24 plate MX-5 Homura

As you know, the boot is a strange shape and dips down in the middle which makes it awkward to put things in the boot properly as per photo below ( this is not my car)

I’ve been looking to see if there is anything I can purchase to sort this problem and the only thing I can find is linked below however it is £235.76, which is I think a bit expensive

Does anyone know of anything else or anywhere selling the same part but cheaper?

Will Mazda sell anything? Does anyone know?

https://www.mx5parts.co.uk/boot-storage-tray-board...